<template>
  <a-upload
    name="file"
    :multiple="multipleFlag"
    :action="uploadAction"
    :headers="headers"
    :data="{'isup':1,'bizPath':bizPath}"
    :fileList="fileList"
    :beforeUpload="beforeUpload"
    @change="handleChange">
    <a-button>
      <a-icon type="upload"/>
      {{ text }}
    </a-button>
  </a-upload>
</template>

<script>

  import Vue from 'vue'
  import { ACCESS_TOKEN } from '@/store/mutation-types'

  const FILE_TYPE_ALL = 'all'
  const FILE_TYPE_IMG = 'image'
  const FILE_TYPE_TXT = 'file'
  const uidGenerator = () => {
    return '-' + parseInt(Math.random() * 10000 + 1, 10)
  }
  const getFileName = (path) => {
    if (path.lastIndexOf('\\') >= 0) {
      let reg = new RegExp('\\\\', 'g')
      path = path.replace(reg, '/')
    }
    return path.substring(path.lastIndexOf('/') + 1)
  }
  export default {
    name: 'JUploadApk',
    data() {
      return {
        uploadAction: window._CONFIG['domianURL'] + '/sys/common/uploadApk/',
        urlDownload: window._CONFIG['domianURL'] + '/sys/common/download/',
        headers: {},
        fileList: []
      }
    },
    props: {
      text: {
        type: String,
        required: false,
        default: '点击上传'
      },
      fileType: {
        type: String,
        required: false,
        default: FILE_TYPE_ALL
      },
      /*这个属性用于控制文件上传的业务路径*/
      bizPath: {
        type: String,
        required: false,
        default: 'temp'
      },
      value: {
        type: String,
        required: false
      },
      //此属性被废弃了
      triggerChange: {
        type: Boolean,
        required: false,
        default: false
      },
      multipleFlag: {
        type: Boolean,
        required: false,
        default: true
      }
    },
    watch: {
      value(val) {
        this.initFileList(val)
      }
    },
    created() {
      const token = Vue.ls.get(ACCESS_TOKEN)
      this.headers = { 'X-Access-Token': token }
    },

    methods: {
      initFileList(paths) {
        if (!paths || paths.length == 0) {
          this.fileList = []
          return
        }
        let fileList = []
        let arr = paths.split(',')
        for (var a = 0; a < arr.length; a++) {
          fileList.push({
            uid: uidGenerator(),
            name: getFileName(arr[a]),
            status: 'done',
            url: this.urlDownload + arr[a],
            response: {
              status: 'history',
              message: arr[a]
            }
          })
        }
        this.fileList = fileList
      },
      handlePathChange() {
        let uploadFiles = this.fileList
        let path = ''
        if (!uploadFiles || uploadFiles.length == 0) {
          path = ''
        }
        let arr = []

        for (var a = 0; a < uploadFiles.length; a++) {
          arr.push(uploadFiles[a].response.message)
        }
        if (arr.length > 0) {
          path = arr.join(',')
        }
        this.$emit('change', path)
      },
      beforeUpload(file) {
        var fileType = file.type
        if (fileType === FILE_TYPE_IMG) {
          if (fileType.indexOf('image') < 0) {
            this.$message.warning('请上传图片')
            return false
          }
        } else if (fileType === FILE_TYPE_TXT) {
          if (fileType.indexOf('image') >= 0) {
            this.$message.warning('请上传文件')
            return false
          }
        }
        //TODO 扩展功能验证文件大小
        return true
      },
      handleChange(info) {
        console.log('--文件列表改变--')
        let fileList = info.fileList
        if (!this.multipleFlag) {
          fileList = fileList.slice(-1)
        }
        if (info.file.status === 'done') {
          if (info.file.response.success) {
            fileList = fileList.map((file) => {
              if (file.response) {
                file.url = this.urlDownload + file.response.message
              }
              return file
            })
          }
          this.$message.success(`${info.file.name} 上传成功!`)
        } else if (info.file.status === 'error') {
          this.$message.error(`${info.file.name} 上传失败.`)
        } else if (info.file.status === 'removed') {
          this.handleDelete(info.file)
        }
        this.fileList = fileList
        if (info.file.status === 'done' || info.file.status === 'removed') {
          this.handlePathChange()
        }
      },
      handleDelete(file) {
        //如有需要新增 删除逻辑
        console.log(file)
      }
    },
    model: {
      prop: 'value',
      event: 'change'
    }
  }
</script>

<style scoped>

</style>